H01G CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
Description
H01G encompasses electrolytic capacitors and related electrolytic devices designed for energy storage and signal processing applications. The class covers capacitor construction, materials, and designs including aluminum, tantalum, and other electrolytic systems, as well as electrolytic rectifiers, detectors, and switching devices that rely on electrolytic phenomena. It also includes light-sensitive and temperature-sensitive devices utilizing electrolytic principles for sensing applications. Related non-electrolytic capacitors, conventional rectifier diodes, and discrete transistor switching devices are classified elsewhere in the H01 section.
Filing statistics
CPC subclass H01G recorded 84,475 patent applications worldwide between 2013 and 2023. Annual filings grew from 6,481 in 2013 to 7,606 in 2023 (+17%), peaking at 8,803 applications in 2018. The most active applicants in class H01 are SAMSUNG ELECTRONICS COMPANY (37,897 applications), TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY (36,116 applications) and APPLIED MATERIALS (21,640 applications).
Source: EPO PATSTAT, worldwide filings
9 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- H01G 11/00 Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G 13/00 Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
- H01G 15/00 Structural combinations of capacitors or other devices covered by at least two different main groups of this subclass with each other (involving at least one hybrid or electric double-layer [EDL] capacitor as the main component H01G11/08)
- H01G 17/00 Structural combinations of capacitors or other devices covered by at least two different main groups of this subclass with other electric elements, not covered by this subclass, e.g. RC combinations
- H01G 2/00 Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G 4/00 Fixed capacitors; Processes of their manufacture (electrolytic capacitors H01G9/00)
- H01G 5/00 Capacitors in which the capacitance is varied by mechanical means, e.g. by turning a shaft; Processes of their manufacture
- H01G 7/00 Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
- H01G 9/00 Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
Top Applicants
Top 10 applicants by patent filingsfor class H01, 2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG ELECTRONICS COMPANY KR 37,897
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 36,116
- APPLIED MATERIALS US 21,640
- LG ENERGY SOLUTION KR 20,770
- LG CHEM KR 19,835
- TOKYO ELECTRON JP 18,519
- ROBERT BOSCH DE 14,595
- INTEL CORPORATION US 13,580
- MURATA MANUFACTURING COMPANY JP 12,151
- SAMSUNG SDI COMPANY KR 12,080